Home / 21,628.20-29,846.90-11,692.20

Finding the Fourth Proportional to 21,628.20, 29,846.90 and 11,692.20

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Solution

The fourth proportional to 21,628.20, 29,846.90 and 11,692.20 is: 16,135.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,628.20 : 29,846.90 = 11,692.20 : x
  2. Step 2: Convert to fraction form
    21,628.20/29,846.90 = 11,692.20/x
  3. Step 3: Cross multiply
    21,628.20x = 29,846.90 × 11,692.20
  4. Step 4: Simplify right side
    21,628.20x = 348,975,924.18
  5. Step 5: Solve for x
    x = 348,975,924.18/21,628.20
  6. Step 6: Final answer
    x = 16,135.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.